CN2482775Y - Light modulator for observing medical x-ray film and CT film - Google Patents
Light modulator for observing medical x-ray film and CT film Download PDFInfo
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- CN2482775Y CN2482775Y CN 01242002 CN01242002U CN2482775Y CN 2482775 Y CN2482775 Y CN 2482775Y CN 01242002 CN01242002 CN 01242002 CN 01242002 U CN01242002 U CN 01242002U CN 2482775 Y CN2482775 Y CN 2482775Y
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Abstract
A light regulator of the viewing lantern for medical used X ray film and CT film includes autotransformer, silicon-controlled switch circuit group, light regulate controller, the input terminal of the autotransformer is connected with the public electrical source, the output terminal is connected with the input terminal of the silicon-controlled switch circuit, all the output terminals of the silicon-controlled switch circuit are connected together as the output terminal of the light regulator, the input terminal of the light regulate controller is connected with the silicon-controlled switch circuit. The output terminal of the light regulate controller is connected with the controllable terminal of the controllable silicon of the silicon-controlled switch circuit. The utility model can achieve the goal of the light regulation via autotransformer through the different voltage output by the silicon-controlled switch circuit, thereby, the work is stable, and reliability is high, the scope of light regulation is large, and the lighting tube can not produce flickering phenomenon.
Description
The utility model relates to a kind of light modulating device of power supply light, the light modulating device of particularly a kind of medical X-ray radiographic film, CT sheet observation lamp.
The desk lamp with dimmer switch of existing medical X-ray radiographic film, CT sheet observation lamp adopts swing-arm type from even voltage regulator, by the contact position of rotary contact change with transformer coil, thereby changes lamp tube power supply voltage; But the required big electric current of fluorescent tube must pass through the contact, thereby the contact is easy to generate spark and causes pitting of contacts, causes loose contact to make the spread of voltage of supplying with fluorescent tube, thereby the fluorescent tube scintillation occurs, and influence is used.
The purpose of this utility model provides that a kind of light modulation amplitude is big, working stability, reliability height, can not make fluorescent tube produce the medical X-ray radiographic film of scintillation, the light modulating device of CT sheet observation lamp.
The purpose of this utility model is achieved in that the light modulating device of medical X-ray radiographic film, CT sheet observation lamp, it is characterized in that: described light modulating device comprises autotransformer, reverse-blocking tetrode thyristor circuit bank, light adjusting controller; Above-mentioned autotransformer has an above output, above-mentioned reverse-blocking tetrode thyristor circuit bank has the reverse-blocking tetrode thyristor circuit with the same quantity of above-mentioned autotransformer fan-out, and above-mentioned light adjusting controller has input and the output with the same quantity of above-mentioned autotransformer fan-out; The input termination public power of above-mentioned autotransformer, output links to each other with the input of corresponding and above-mentioned reverse-blocking tetrode thyristor circuit respectively, all outputs of above-mentioned reverse-blocking tetrode thyristor circuit are connected as the output of described light modulating device, each input of above-mentioned light adjusting controller links to each other with above-mentioned reverse-blocking tetrode thyristor circuit respectively, and each output of above-mentioned light adjusting controller links to each other with the thyristor gating circuit control voltage input terminal of above-mentioned reverse-blocking tetrode thyristor circuit respectively.
Above-mentioned light adjusting controller is a double-pole multidigit coupled switch.
The utility model is directly exported different voltages by autotransformer by the reverse-blocking tetrode thyristor circuit and is reached the light modulation purpose, so light modulating device working stability, reliability height, the light modulation amplitude greatly, can not make fluorescent tube produce scintillation.
Below in conjunction with accompanying drawing the utility model embodiment is further described.
Fig. 1 is a block diagram of the present utility model.
Fig. 2 is the circuit diagram of the utility model embodiment.
With reference to Fig. 1, this light modulating device, comprise autotransformer 3, reverse-blocking tetrode thyristor circuit bank 1, light adjusting controller 2, the input termination public power of autotransformer 3 wherein, output links to each other with the input of corresponding reverse-blocking tetrode thyristor circuit respectively, all outputs of reverse-blocking tetrode thyristor circuit are connected as the output of described light modulating device, each input of light adjusting controller 2 links to each other with the reverse-blocking tetrode thyristor circuit respectively, and each output of light adjusting controller 2 links to each other with the thyristor gating circuit control voltage input terminal of reverse-blocking tetrode thyristor circuit respectively.
Fig. 2, this light modulating device, comprise that resistance R 1__R14, capacitor C 1__C7, controllable silicon VS1__VS7 constitute 7 groups of independently reverse-blocking tetrode thyristor circuit, light adjusting controller 2 (K2), the structure of the wherein every road of autotransformer 3 (T) reverse-blocking tetrode thyristor circuit is identical: the input/output terminal of controllable silicon VSi (1≤i≤7) is connected with capacitor C i, resistance R 2i-1, capacitor C i links to each other with the end of resistance R 2i with the other end of resistance R 2i-1, and the other end of resistance R 2i links to each other with the I pin of light adjusting controller K2-1; 7 voltage output ends in the input termination power supply input circuit of autotransformer T, autotransformer T200V～110V scope are connected with the input of 7 groups of reverse-blocking tetrode thyristor circuit respectively, and the output of reverse-blocking tetrode thyristor circuit is as the output of regulator; The i of light adjusting controller K2-1, K2-2 (1≤i≤7) pin is connected with the circuits for triggering control voltage input terminal of i (1≤i≤7) resistance R 2i, controllable silicon Vsi respectively.During use, K switch 1 closure, the conducting that is triggered of the pairing reverse-blocking tetrode thyristor circuit of light adjusting controller, the specific voltage value of a voltage output end output of transformer T.Counter-clockwise direction is rotated K2 in the time will turning down voltage, corresponding reverse-blocking tetrode thyristor circuit turn-on, and then at this moment the lower voltage of transformer T output can make the observation lamp deepening, and in like manner clockwise direction rotates the high voltage of K2 transformer T output, and observation lamp is brightened.
Claims (2)
1, the light modulating device of medical X-ray radiographic film, CT sheet observation lamp, it is characterized in that: described light modulating device comprises autotransformer, reverse-blocking tetrode thyristor circuit bank, light adjusting controller; Above-mentioned autotransformer has an above output, above-mentioned reverse-blocking tetrode thyristor circuit bank has the reverse-blocking tetrode thyristor circuit with the same quantity of above-mentioned autotransformer fan-out, and above-mentioned light adjusting controller has input and the output with the same quantity of above-mentioned autotransformer fan-out; The input termination public power of above-mentioned autotransformer, output links to each other with the input of corresponding and above-mentioned reverse-blocking tetrode thyristor circuit respectively, all outputs of above-mentioned reverse-blocking tetrode thyristor circuit are connected as the output of described light modulating device, each input of above-mentioned light adjusting controller links to each other with above-mentioned reverse-blocking tetrode thyristor circuit respectively, and each output of above-mentioned light adjusting controller links to each other with the thyristor gating circuit control voltage input terminal of above-mentioned reverse-blocking tetrode thyristor circuit respectively.
2, light modulating device according to claim 1 is characterized in that: above-mentioned light adjusting controller is a double-pole multidigit coupled switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01242002 CN2482775Y (en) | 2001-06-07 | 2001-06-07 | Light modulator for observing medical x-ray film and CT film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01242002 CN2482775Y (en) | 2001-06-07 | 2001-06-07 | Light modulator for observing medical x-ray film and CT film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2482775Y true CN2482775Y (en) | 2002-03-20 |
Family
ID=33653846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01242002 Expired - Fee Related CN2482775Y (en) | 2001-06-07 | 2001-06-07 | Light modulator for observing medical x-ray film and CT film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2482775Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1719959B (en) * | 2005-06-03 | 2011-10-19 | 汕头大学 | LED lamplight modulating system for airport aviation aid |
-
2001
- 2001-06-07 CN CN 01242002 patent/CN2482775Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1719959B (en) * | 2005-06-03 | 2011-10-19 | 汕头大学 | LED lamplight modulating system for airport aviation aid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Yuehua Medical Instruments Factory, Shantou City Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Yuehua Medical Instruments Factory, Shantou City Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020320 Termination date: 20100607 |